Differences in Handgrip Strength-Endurance and Muscle Activation between Young Male Judo Athletes and Untrained Individuals

Autor/inn/en	Honorato, Renêe de Caldas; Franchini, Emerson; Lara, Jerusa Petrovna Resende; Fonteles, André Igor; Pinto, Julio Cesar Barbosa de Lima; Mortatti, Arnaldo Luis
Titel	Differences in Handgrip Strength-Endurance and Muscle Activation between Young Male Judo Athletes and Untrained Individuals
Quelle	In: Research Quarterly for Exercise and Sport, 92 (2021) 1, S.1-10 (10 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Honorato, Renêe de Caldas) ORCID (Franchini, Emerson) ORCID (Lara, Jerusa Petrovna Resende) ORCID (Fonteles, André Igor) ORCID (Pinto, Julio Cesar Barbosa de Lima) ORCID (Mortatti, Arnaldo Luis)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0270-1367
DOI	10.1080/02701367.2019.1699233
Schlagwörter	Athletics; Athletes; Muscular Strength; Males; Early Adolescents; Maturity (Individuals); Body Composition; Body Weight; Body Height; Fatigue (Biology); Human Body; Interaction; Training + Suchen Sie Ihr Suchwort? Leichtathletik; Athlet; Muskelkraft; Male; Männliches Geschlecht; Reifung; Körpergewicht; Körpergröße; Fatigue; Ermüdung; Menschlicher Körper; Interaktion; Ausbildung
Abstract	Purpose: The aim of this study was to compare strength-endurance handgrip performance and muscle coactivation between judo athletes and untrained young males. Method: The sample was 38 judo athletes and 38 untrained young males, between 12 and 15 years-old. Maturational status was evaluated by age at peak height velocity. A maximal isometric handgrip test (three 5-s repetitions, with 90-s intervals) and an isometric strength-endurance handgrip test (ten 10-s all-out isometric handgrip repetitions, 20-s intervals) was conducted in dominant (D) and nondominant (ND) hands, using a dynamometer with EMG monitor to detect muscle activation. Results: ANCOVA analysis, controlling for maturational status, showed that judo athletes had higher values of maximal absolute (D = 33.6 ± 8.9 kgf vs 29.1 ± 9.0 kgf; ND = 33.8 ± 9.9 kgf vs 28.1 ± 8.1 kgf) and relative strength to body mass (D = 0.64 ± 0.12 kg/kgf vs 0.57 ± 0.13 kg/kgf; ND = 0.64 ± 0.16 kg/kgf vs 0.56 ± 0.14 kg/kgf). Moreover, judo athletes presented lower strength mean fatigue index (33.2 ± 6.9 % vs 37.9 ± 8.7 %) and muscle coactivation (48 ± 19.8 % vs 57.5 ± 22 %), only in the dominant hand, during the isometric strength-endurance handgrip test. During all repetitions of isometric endurance test there were no group or interaction between factors effects for absolute strength, relative strength and muscle coactivation. Conclusion: In summary, judo athletes present higher maximal absolute and relative strength and strength-endurance performance, concomitantly with decreased muscles co-activation (primary in dominant hand) during handgrip tests. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01